Blizzard posted a lengthy guide to what to do if your account got hacked, both in text and video form. What still is very confusing to me is that the passwords for Battle.Net is not case sensitive.
‘Account security is of the utmost importance. As such, we want to arm the Heroes of Sanctuary with the knowledge they need to ensure the accounts they play remain safe, secure, and in the right hands. We highly recommend that you review the guides and FAQs below and follow the helpful tips to make sure that your computer and your gaming accounts remain secure.
General Security Tips
Guide & Checklist • Video Guide
Battle.net Authenticator (Token)
FAQ • Video Guide • Order Online
Battle.net Mobile Authenticator
FAQ • Video Guide • Download for Free
Battle.net Mobile Alerts
FAQ • Video Guide
Guide & Samples • Official Blizzard Domains • Identifying Spoofed Addresses
We care about the security of your Battle.net accounts; in fact, it is one of our top priorities. We want Battle.net accounts to be a worry-free and convenient way to access all your Blizzard Entertainment games and connect with your friends; keeping your account safe and secure is an important goal for us. We hope that the helpful resources above help to achieve that goal.
Follow the link for more information